Born from the union of the Mach 4 and the Mach Supersonic, this mile swallower is designed for performance and ready for competition. Featuring a streamlined mesh upper and flat tongue, the new Mach 5 allows for a faster stride thanks to the PROFLY midsole which combines lightweight, responsive foam directly underfoot and a rubberized EVA layer below. and gait characteristics. Why you'll love it - This high-intensity training shoe was designed to protect your feet from fatigue, whatever your pace.